Spectacle-temple of spiral wire.



J. FABER. SPECTACLE TEMPLE 0F SPIRAL WIRE.

APPLICATION FILED DEC. 4, 1914.

Patented Oct. 19, 1915.

JUL/us JZBER I 5y Arron/my I m E too great a pressure on JULIUS FABER,OF STUTTGART, GERMANY.

SPECTACLE-TEMPLE OF SPZIRAL WIRE.-

Specification of Letters Patent.

Patented Oct. is, rails.

Application filed December 4, 1514. Serial No. 875,444.

7 '0 all whom it may concern Be it known that I, Jnnins FABER, a citizenof the German Empire, residing at Stuttgart, in the Kingdom ofWurttemberg.

Germany, have invented certain new anduseful Improvements inSpectacle-Temples of Spiral Wire; and I do hereby, declare the followingto be a full, clear, and exact description of the invention,.such aswill enable others: skilled in the art to which it.

appertains to make and use the same.

This invention relates to of spiral wire hollow along its whole length.Spectacle temples of the? known type offer the inconvenient to cause ahurting pressure behind the ear of a sensible wearer. In order toobviatethis drawback, it has been proposed to combine that part of thetem ple which is supposed to be fixed behind the ear with the other partbeing pivotally secured to the frame of the spectacle by means of anelastic-spiral spring. This procedure has not been successful'inpractice because either the pressure behind the car was not Clone awaywith or the; spectacle did not fit-comfortably. Furthermore there existspectacle temples of spiral wire wound around a coreof elastic wire.This construction especially is not suitable for the purpose of theinvention, the core offering account of the clasticity of the core.

According to the present invention all .7 these lnconveniences of thebest known tem- 'ples are done away with by the fact that the spectacletemple consists of'a continuous spiral wire on its whole length. The tom1 ple is spun of several layers of finest da1nask'metal threads in suchmanner that the I temple is hollow on its whole lengthtwith theexception of the end where it is pivoted to, the frame of the spectacle.At this end a short core engages into the hollow temple bar and servesto stiffen it at the connection end.

The lateral parts of the temple bar are somewhat thinner than the partengaging the ear of the bearer, thereby they are. sufficiently elasticand smooth but strong enough to secure a correct and comfortable fit ofthe spectacle while the thicker ear part of the templeattains asmoothness of such degree that'no pressure of the temple can be felt'sible part of the head.

by the wearer behind the ear, the most senspectacle temples The presentinvention is illustrated on the accompanying one sheet of drawing.

Figure 1 is a perspective View of the new temple attached to aspectacle, Fig. 2 is a side View of the temple itself on an enlargedscale, Fig. 3 is a side elevation, on a still larger scale, of thetemple,- apart being in section to show the inner coil.

The temple consists of several super posedly spun layers of fine hollowdamask metal wire. In the drawing Fig. 3, there are illustrated twolayers of Wire coils. These coils are hollow from one end to the other.At the extremity a which is linked to the point d of thespectaclv'irarne the hollow spring coil is stiffened by means of aninserted core a its elasticity naturally thereby being removed. At somedistance fromthe connection extremity athe spiral becomes thinner atthepart b-whioh is of the ordinary temple thickness. The free extremityc of the temple which is to engage the ear o-fthe wearer is of muchincreased diameter with respect to the part 6, thereby a very highelasticity being attained and any pressure even the slightest one uponthe ear being utterly impossible. The spiral sprmg is manufactured insuch way that .hrst, the damask wire is woven into the de so i ingsafter being completed pressed so that the temple is quite smooth.

Having thus described myginvention, 1 claim'- An elastic spectacletemple of spiral wire being hollow along its whole length and consistingof several layers of coils, these coils being smaller in diameter, atthe parts 71 and larger at the parts a engaging the ear, the solderingof the spiral to the frame and the stiffening of the hollow temple beingrendered possible by means of a core 6 inserted into the free open endof'the temple.

In testimony whereof l affix my signature, in presence of two witnesses.

JULIUS FABER. Witnesses:

\VAL'rnn FERMARBETH, FREDA M AIIILE.

